All Questions
Tagged with material-science quantum-mechanics
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Flatband with our Moire Physics
Is there any material Class available where the lattice vectors are in the order of several nm instead of Angstrom? I am looking for some exotic not well studies lattice class which can be ...
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Should natural frequency be modeled using molecules?
Consider an object. This can be anything from a metal ball to a table, etc. Now this object has a natural frequency. When we hit the object, it will start vibrating with a certain frequency $f$. ...
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How do pencil erasers erase on a fundamental level?
One could say we're taking advantage of friction, but I want to dig deeper down to atomic level: what's the process or chain that happens when one erases?
Edit: subatomic -> atomic
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Anomaly in Photoelectric effect
Good day.
While doing a physics experiment for a university assignment, I was tasked with measuring the maximum wavelength at which a potassium cathode shined by a monochromatic light emits electrons.
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Question about k.p Method
I am reading David Miller's quantum mechanics, and I do not understand the derivation for k.p method:
We are particularly interested in the behavior of semiconductors near to maxima and minima.
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How can things around us have different colours if they have specific emission spectra?
Objects appear in different colours because they absorb some colours (wavelengths) and reflect or transmit other colours. The colours we see are the wavelengths that are reflected or transmitted.
As ...
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How does quantum mechanics explain the color of macroscopic objects?
I am familiar with two explanations for the phenomenon of visible color.
The first is that, for any given object, there are some wavelengths of light it reflects and some it absorbs. The reflected ...
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Is inverse quantum confinement possible?
In the "Particle in a Box" thought experiment/analogy, the reduction in volume of a cavity enclosing a particle will lead to an increase in the bandgaps energy levels that simulate that of ...
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Can excited high spin states be used as qubits?
What the title says. I was wondering if we can use excited high spin states formed by enhanced intersystem crossing for qubits? like intramolecular quartets formed by a doublet and an intersystem ...
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Is there a lower limit to the size of magnetic domains?
When reading about magnets synthesized at the nanoscale level, there is plenty of references to spontaneous magnetic order re-orientation; as these materials are too small to have a magnetic domain.
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Why don't electrons fall or collapse around atom when an object accelerates rapidly?
In laws of motion, everything has an equal and opposite reaction, and it applies to all matters in the reality.
If the earth stops moving suddenly just for one second, then everything on earth will be ...
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Why ceramic magnets have a positive temperature coefficient of their magnetization?
Unilke normal ferromagnets it is stated here that ferrite (ceramic) or else called ferrimagnets, non-intuitively have a positive temperature coefficient meaning their magnetization decreases with a ...
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Why is the Susceptibility of Paramagnetic Materials so Low?
Qualitatively, what fundamental physical property stops a paramagnetic material from reaching a high magnetic saturation under an applied field? This question is similar to the one asked here: Why do ...
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Do fullerenes have a better quantum yield than carbon quantum dot's of similar dimensions?
As a fullerene and a carbon quantum dot of similar dimensions would have the same surface area but different internal volume, as a Fullerene does not contain carbon within it's interior, but just the ...
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Can electron confinement systems display hyperfine transitions?
Just as Quantum dots can display the energy transitions characteristics of electron in a conventional hydrogenic atom to give emission tunability, can it and other similar electron confinement system ...
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